Differential D7427 Diff 19083 lib/libc/tests/stdlib/cxa_thread_atexit_test.cc

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lib/libc/tests/stdlib/cxa_thread_atexit_test.cc

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				/*-
				* Copyright (c) 2016 Mahdi Mokhtari <mokhi64@gmail.com>
				* All rights reserved.
				*
				* Redistribution and use in source and binary forms, with or without
				* modification, are permitted provided that the following conditions
				* are met:
				* 1. Redistributions of source code must retain the above copyright
				* notice, this list of conditions and the following disclaimer.
				* 2. Redistributions in binary form must reproduce the above copyright
				* notice, this list of conditions and the following disclaimer in the
				* documentation and/or other materials provided with the distribution.
				*
				* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
				* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
				* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
				* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
				* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
				* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
				* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
				* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
				* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
				* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
				* SUCH DAMAGE.
				*/

				#include <sys/cdefs.h>
				__FBSDID("$FreeBSD$");

				#include <dlfcn.h>
				#include <atf-c++.hpp>
				#include <cstdio>
				#include <cstdlib>
				#include <thread>

				static FILE *output = NULL;

				struct Foo {
				Foo() { ATF_REQUIRE(fprintf(output, "Created\n") > 0); }
				~Foo() { ATF_REQUIRE(fprintf(output, "Destroyed\n") > 0); }
				void use() { ATF_REQUIRE(fprintf(output, "Used\n") > 0); }
				};

				struct Bar {
				Bar() {}
				~Bar() {
				thread_local static Foo foo;
				ATF_REQUIRE(fprintf(output, "DIED\n") > 0);
				}
				void use() {}
				};

				extern "C" int __cxa_thread_atexit(void ()(void ), void , void );

				static void
				again(void *arg)
				{

				__cxa_thread_atexit(again, arg, &output);
				}

				struct Baz {
				Baz() {}
				~Baz() {
				again(NULL);
				}
				void use() {}
				};

				static thread_local Foo f;
				static thread_local Foo g;
				static thread_local Bar h;
				static thread_local Baz e;

				/*
				* This test must be linked to libpthread.
				*/
				ATF_TEST_CASE_WITHOUT_HEAD(cxx__thr);
				ATF_TEST_CASE_BODY(cxx__thr)
				{
				void *libthr_handle;

				/* Avoid coredump during f construction. */
				output = stderr;

				libthr_handle = dlopen("libthr.so.3", RTLD_LAZY \| RTLD_GLOBAL \|
				RTLD_NOLOAD);
				ATF_REQUIRE(libthr_handle != NULL);
				dlclose(libthr_handle);
				}

				/*
				* In this test f.use() will test cxa_thread_atexit() in non-threaded mode.
				* After f.use() main will be threaded and we'll have one additional thread
				* with its own TLS data.
				*/
				ATF_TEST_CASE_WITHOUT_HEAD(cxx__thread_local_before);
				ATF_TEST_CASE_BODY(cxx__thread_local_before)
				{
				static const char out_log[] = "Created\nCreated\nUsed\nCreated\n"
				"Created\nUsed\nCreated\nDIED\nDestroyed\nDestroyed\nDestroyed\n";

				ATF_REQUIRE((output = fopen("test_before.txt", "w")) != NULL);

				f.use();
				std::thread t([]() { f.use(); });
				t.join();

				fflush(output);

				ATF_REQUIRE(atf::utils::compare_file("test_before.txt", out_log));
				}

				/*
				* In this test, f.use() will test __cxa_thread_atexit()
				* in threaded mode (but still in main-threaed).
				*/
				ATF_TEST_CASE_WITHOUT_HEAD(cxx__thread_local_after);
				ATF_TEST_CASE_BODY(cxx__thread_local_after)
				{
				static const char out_log[] = "Created\nCreated\nUsed\nCreated\n"
				"DIED\nDestroyed\nDestroyed\nDestroyed\nCreated\nCreated\nUsed\n";

				ATF_REQUIRE((output = fopen("test_after.txt", "w")) != NULL);

				std::thread t([]() { g.use(); });
				t.join();
				sleep(1);
				g.use();

				fflush(output);

				ATF_REQUIRE(atf::utils::compare_file("test_after.txt", out_log));
				}

				/*
				* In this test, we register a new dtor while dtors are being run
				* in __cxa_thread_atexit().
				*/
				ATF_TEST_CASE_WITHOUT_HEAD(cxx__thread_local_add_while_calling_dtors);
				ATF_TEST_CASE_BODY(cxx__thread_local_add_while_calling_dtors)
				{
				static const char out_log[] = "Created\nCreated\nCreated\nDIED\n"
				"Destroyed\nDestroyed\nDestroyed\n";

				ATF_REQUIRE((output = fopen("test_add_meanwhile.txt", "w")) != NULL);

				std::thread t([]() { h.use(); });
				t.join();
				sleep(1);

				fflush(output);

				ATF_REQUIRE(atf::utils::compare_file("test_add_meanwhile.txt", out_log));
				}

				ATF_TEST_CASE_WITHOUT_HEAD(cxx__thread_inf_dtors);
				ATF_TEST_CASE_BODY(cxx__thread_inf_dtors)
				{

				/*
				* Only added to make isolated run of this test not
				* coredumping. Construction of Foo objects require filled
				* output.
				*/
				output = stderr;

				std::thread t([]() { e.use(); });
				t.join();
				}

				ATF_INIT_TEST_CASES(tcs)
				{

				ATF_ADD_TEST_CASE(tcs, cxx__thr);
				ATF_ADD_TEST_CASE(tcs, cxx__thread_local_before);
				ATF_ADD_TEST_CASE(tcs, cxx__thread_local_after);
				ATF_ADD_TEST_CASE(tcs, cxx__thread_local_add_while_calling_dtors);
				ATF_ADD_TEST_CASE(tcs, cxx__thread_inf_dtors);
				}